Faunistic Study of Ladybirds (Coleoptera: Coccinellidae) in the Banat Region, Romania

Vîrteiu, A. M.; Grozea, Ioana; Ștef, Ramona; Vlad, M.; Dobrin, I.

doi:10.15835/buasvmcn-agr:11489

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…com/2011/12/). Virteiu et al (2015) menționează prezența speciei la Timișoara în 2013-2014, iar în presa locală au fost semnalate adevărate invazii de buburuze în casele din trei localități ale județului Timiș, la sfârșitul anului 2013, precum și la Arad și Lipova, în toamna anului 2014, când insectele căutau adăpost pentru iernare. Numeroase semnalări sunt din județele Mureș și Harghita (Anonymous 2016).…”

Section: Discuțiiunclassified

Noi semnalari ale unor specii de insecte forestiere invazive in Romania

Olenici

Duduman

2016

Bucov. For.

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The native range of each species, the first report and the present distribution in Europe and in Romania are discussed. The new records suggest that all the analysed species have established populations in our country and a more widespread distribution than that previously known. Some of them attain sometimes locally or zonally high population levels and are regarded as important pests. For the most species, new observations are necessary, both concerning their presence in the areas where they were not found so far, but also to assess the impact of insect populations on their hosts and on the recipient biocoenoses. A particular attention should be paid to the species H. axyridis, whose swarms invade the houses of the people during the autumn and could cause annoyance and possibly allergy. Citizen participation in observing and reporting of these new "guests" is encouraged.

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Section: Discuțiiunclassified

Noi semnalari ale unor specii de insecte forestiere invazive in Romania

Olenici

Duduman

2016

Bucov. For.

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“…The ~6000 world ladybirds (Virteiu et al, 2015) are among the most common natural enemies of many pest insects. Most adults and larvae of ladybirds have a beneficial action and feed mainly on mites, aphids and other insects, contributing to their natural and biological control.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF AN INSECTICIDE FORMULATION ON Hippodamia convergens (GUÉRIN) AND NYMPHS OF Aphis craccivora (KOCH) IN THE LABORATORY

Schiess

Araya

Curkovic

2017

Chil. j. agric. anim. sci.

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RESUMENSe evaluó la toxicidad de una formulación insecticida con triazamato y alfa-cipermetrina (120 y 38,4 g i.a. L -1 , respectivamente) sobre Hippodamia convergens (Guérin), y su presa, el áfido Aphis craccivora (Koch). Ambos insectos se colectaron en alfalfa Medicago sativa L. y se criaron sobre plantas de haba (Vicia faba L.) La formulación se asperjó en una torre Potter sobre folíolos de alfalfa a la dosis máxima recomendada (400 mL ha -1 ) y al 50, 25, 15, 10, 5 y 1% de esa dosis. Los huevos y pupas de H. convergens se dejaron sobre los folíolos después de tratarlos. La mortalidad de los estados de desarrollo de H. convergens y de los áfidos adultos se evaluó a las 24 y 48 h. La CL 50 para ambos insectos se determinó mediante análisis Probit. La dosis máxima fue moderadamente tóxica (mortalidad de 80 a 99%) para los adultos, pupas, y huevos de H. convergens, pero tóxica (> 99%) para A. craccivora y las larvas del depredador. Las CL 50 para los adultos, huevos, larvas, y pupas de H. convergens fueron 0,405; 341,2; 0,163; y 1,057 mL L -1 , respectivamente, y 0,013 mL L -1 para A. craccivora. La dosis menor (1% de la máxima) causó 93% de mortalidad del áfido, lo que indica que dosis bajas son suficientes para controlar esta plaga por aspersión. Así, la dosis comercial se podría disminuir al mínimo para satisfacer las necesidades de manejo de A. craccivora, pues el plaguicida aún controlaría la plaga y tendría menos efectos sobre H. convergens.Palabras clave: CL 50 , chinita, toxicidad insecticida. ABSTRACTThe toxicity of an insecticide formulation containing triazamate and alpha-cypermethrin (120 and 38.4 g L -1 , respectively) was evaluated on Hippodamia convergens (Guérin), and its prey, the aphid Aphis craccivora (Koch). Both insects were collected on alfalfa, Medicago sativa L., and reared on faba bean (Vicia faba L.). The formulation was sprayed on alfalfa leaflets in a Potter tower at the maximum dose recommended (400 mL ha -1 ) and at 50, 25, 15, 10, 5 and 1% of that dose. The eggs and pupae of H. convergens were left on the leaflets after treatment. The mobile stages of both insects were set on the leaflets once they had dried at room temperature to prevent them from escaping. Mortality during the growth stages of H. convergens and adult aphids was evaluated 24 and 48 h after treatment application. The LC 50 for both insects was determined by Probit analysis. The maximum dose was moderately toxic (mortality from 80 to 99%) for adults, pupae, and eggs of H. convergens, but toxic (> 99%) for A. craccivora and the ladybird larvae. The LC 50 s for adults, eggs, larvae, and pupae of H. convergens were 0.405; 341.2; 0.163; and 1.057 mL L -1 , respectively, and 0.013 mL L -1 for A. craccivora. The lowest dose (1% of the maximum) caused 93% aphid mortality, indicating that low doses are sufficient to control this pest by spraying. Therefore, the commercial dose could be reduced to this amount and still control A. craccivora, resulting in lesser effects on H. convergens.

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“…Severe attacks of T. tabaci can result in total defoliation and potential crop loss (Ananthakrishnan, 1984). According to Grozea et al, (2012Grozea et al, ( , 2015Grozea et al, ( , 2016 researches, the southern green stink bug, N. viridula is a polyphagous species, newly invasive for our country, which feeds on a wide range of mono -and dicotyledonous plants, preferring Solanaceae family plants, which through attacks on fruiting periods, leads to qualitative depreciation of crops. Helicoverpa armigera (Lepidoptera: Noctuidae) -key pests for paprika pepper crops As we previously have pointed out, the species with the highest number of specimens and which causes at the same times the most significant damages, both in terms of quantity and quality, is H. armigera.…”

Section: Resultsmentioning

confidence: 99%

Is Helicoverpa Armigera (Lepidoptera: Noctuidae) a Key Pest in Western Romanian Paprika Pepper Crops?

Vîrteiu

Seibert

Ștef

et al. 2021

Rom. J. Plant. Prot.

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Recent changes in intensive vegetable production systems in Romania, but also throughout Europe, with the frequent and sometimes exclusive use of monoculture for certain groups of vegetables, including the Solanaceae group, have resulted in major changes in entomofauna in these areas. In addition, we are witnessing global climate change that also affects the composition and density of entomofauna in these agro-ecological areas. Under the influence of these two decisive factors, the dynamics of a pest population is oscillating and, therefore, some less known or newly entered species in the research area (invasive species) begin to cause significant damage to crops and especially to their control. 20 years after the first mentions of the attack, this pest causes considerable damage to the pepper crop, in the case of the present study, paprika. From the pepper crop for paprika, in 2020 in Chișlaca locality, Arad County, a number of 11 pest species were collected. The species Helicoverpa armigera was the predominant species, registering the highest number of specimens.The dynamics of larval populations showed an oscillating evolution, depending on climatic conditions, the maximum threshold being reached on the third decade of August.

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Faunistic Study of Ladybirds (Coleoptera: Coccinellidae) in the Banat Region, Romania

Cited by 4 publications

References 8 publications

Noi semnalari ale unor specii de insecte forestiere invazive in Romania

Noi semnalari ale unor specii de insecte forestiere invazive in Romania

EFFECT OF AN INSECTICIDE FORMULATION ON Hippodamia convergens (GUÉRIN) AND NYMPHS OF Aphis craccivora (KOCH) IN THE LABORATORY

Is Helicoverpa Armigera (Lepidoptera: Noctuidae) a Key Pest in Western Romanian Paprika Pepper Crops?

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